Scraper for rollers.



No. 702,868. Patented lune I7, |902'.

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SGRAPER FOR BOLLERS.

(Appliation led July 11, 1900. Renewed Apr. 25, 1902.)

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will!! g z/weg Jaxx/@5^ No. 702,868. Patented .lune I7, |902.

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ASCRAPER FOR ROLLERS.

(Application med July 11, 1900. Renewed Apr. 25, 1902.)

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l .ATENT FFCE RICHARD CLUCAS, OF LIVERPOOL, ENGLAND, ASSIGNOR-TO THELIVER- POOL MALT COMPANY, LIMITED, OFl LIVERPOOL, ENGLAND.

SCRAPER FOR ROLLERS.

SPECIFICATION forming part of' Letters Patent No. 702,868, dated .T une17, 1902.

Application filed July 11,1900. Renewed April 25. 1902. Serial No.104,630. (No model.)

To a/ZZ whom, t may concern:

Be it known that I, RICHARD CLUoAs, a subject of the Queen of GreatBritain, residing at Liverpool, in the county of Lancaster, England,have invented certain new and useful Improvements in Scrapers forRollers and Like Rotary Bodies, of which the following is a full, clear,and exact description.

When Scrapers are used in connection with rollers,vwheels, and similarrotary parts of machines, mills, vehicles, and the like, greatdifficulties are at present experienced when it is desired to obtain andmaintain a constant, close, and uniform contact between the scraper andthe rotary body throughout their common length, and these diflicultiesare increased when the wear of the parts in Contact is not uniform, whenthe rotary body is or becomes heated, or when the rotary body is mountedin yielding bearings.

The object of this invention is to insure such constant, close, anduniform contact of the scraper with the periphery of the rotary bodyunder all conditions of work and without the continuous personalsupervision which is now necessary.

According to the present improvements the scraper or each section of thescraper is secured upon a carrier-bracket in such a manner that it maybe freely self-adjusted by a movement having one or both of twocomponents. One of these components is a motion of the carrier-bracketwhen permitted about` an axis parallel with the axis of the rotary body,the other component beinga motion about an axis at right angles with thesaid parallel axis. The scraper or each section of the scraper is heldin contact with the rotary body by gravity or by springs, and itsmovement results from any displacement of the rotary body, from anyaccidental and temporary adhesion of matter thereto, from unequal wearof the scraper or rotary body, or from any other similar cause.

The accompanying drawings illustrate in what manner this invention maybe carried into practice.

Figure l represents afrontview of a scraper and its carrier-bracket, andFig. 2 an end View of the same, partly in section. Fig. 3 shows in asectional end'view a modied form of the carrier-bracket. Fig. 4represents a back view, Fig. 5 a sectional end View, and Fig. 6 a plan,ofl a short scraper, which may be used alone or asa section or singleelement of a long composite scraper.` Fig. 7 shows in front view themounting of a plurality of sections forming a long continuous compositescraper, and Fig. 8 shows in a similar view the mounting of the sectionsforming a long discontinuous scraper.

In each of the figures similar letters of reference denote similarparts.

Referring to Figs. l and 2, the scraper A is bolted to the plate B,which has a round central tailpiece C, freely fitting into a verticalhole into the carrier-,bracket D. This carrier-bracketis freely mountedupon a rod E, fixed parallel with thenormal axis of the rotary body andat such a distance therefrom that the scraper can make the requiredcontact. The carrier-bracket is provided with a tailpiece, such as F, onwhich a counter- Weight may be fitted, or to which a spring, as shown byFig. 5, can be attached to force the scraper into contact with therotary body.

In the modification represented by Fig. 3 the plate B has a centralprojection or lug O at a right angle, which is bored to fit freely upona round stud D', fixed in or forming part of the carrier-bracket D.-vViith either construction it will be seen that under the force ofgravity or of a spring or springs the scraper can yieldor be moved aboutthe axis of the rod E and at the same time about an axis at right anglesto E. The carrier-bracket may have its linear displacement prevented bysleeves or ferrules G G on the rod E.

Figs. 4, 5, and 6 illustrate the construction of an individual elementor section for a composite continuous or discontinuous scraper, eachelement resembling the scraper shown by Fig. l except in length. Theindividual elements may be assembled to form a composite scraperinvarious ways-for ex-` less than theirwidth, so that the sections ineither row overlap those in the contiguous IOO This is'inecessary toinsure that the Whole surface of the rotary body is acted on fully. Thesections may be arranged in three or more rows, in which cases thearrangement'of the sections would correspond with that shown by Fig. 8.The sections are maintained in their respective relative positions bythe sleeve distance-pieces G G.

In the continuous form of the composite scraper shown by Fig. 7 all thesections are assembled side by side on a single rod E. This arrangement,however, is less eiective in some cases, as it may leave small ridges ofmaterial on the rotary body between the sections.

In ordinary cases the scraper may be constructed, as shown by Fig. l, ina single piece; but where such a scraper would be of considerable lengthor where it may be subjected to a heating effect, in either of whichcases it may become bent or distorted, the scraper should be constructedas illustrated by Figs. 7 or 8.

What I do claim as my invention, and desire to secure by Letters Patent,is-

1. A scraper for rollers, wheels, and similar rotary bodies, consistingof a single blade centrally pivoted on a carrier-bracket which is freelymounted upon a rod parallel with the axis of the rotary body,substantially as described.

2. A scraper for rollers, wheels, and similar rotary bodies, consistingof a plurality-of sections, each of which'comprises a blade centrallypivoted upon a carrier-bracket, which is freely mounted upon a ro`diixed parallel with the axis of the rotary body, substantially asdescribed.

3. A scraper for rollers, wheels, and similar rotary bodies, consistingof a plurality of sections each of which comprises a blade centrallypivoted upon a carrier-bracket, the sections being mounted successivelyupon a plurality of rods parallel with the axis of the rotary body,substantially as described.

4. In combination with a roller-scraper, a carrier-bracket constructedwith a hole to iit upon a supporting-rod freely, and provided with meanswhereby the scraper can be centrally pivoted thereto at right angles tothe said hole, substantially as described.

In witness whereof I have subscribed my name to this specification inthe presence of two subscribing witnesses.

RICHARD QLUCAS.

Witnesses:

JOSEPH ERNEST FAULKNER, WILLIAM E. HEYs.

